2008 Suzuki Boulevard 1800. Got it this summer at 1700 kms, now 3500kms. Stalling at idle once warmed was infrequent, but is getting to having to maintain throttle when slowing down with clutch in. Tried different fuels with and without ethanol, and have used gas line anti freeze. Issue is after about 6 or 7 kms driving.

SOURCE: 2007 Suzuki C50 Boulevard Oil weight

dear bldrnr the proper oil weight for your bic depends on the climate where you ride 20/50 is recommended for hot climates 10/40 is recommended for average temps. jim

SOURCE: Fuse box, Suzuki Boulevard C50 2005

Should be behind one of your sidecovers. I f you did'nt get a manual w/yor bike then order one from your dealer. It's an invaluable tool....Good luck to you friend....Tim

SOURCE: I need tuning specs for my 1982 suzuki gs 750.

You need to fix the fueling first - without fuel it won't run!
Your other problem sounds like an air leak - either the manifold or the carb. Check by spraying WD-40 or CRC at the manifold and carb join while the bike is running - if the revs change (either up or down) you have a leak.

SOURCE: 83 suziki GS450 idle issues

the problem with the rubber was close but on the gs450 there is a metal insert that even if the rubber was rotted away the metal seals aginst the head so it cant leak. the problem is on the gs 450 suzuki used a cheap throttle cable that kinks behind the gas tank and kinks at the bend to the crabs under the set and the throttle system is a pull only not a dual cable pull push to always close the throttle. if you start the bike a wiggle the bend in the cable that comes out from the twist grip you will see it changes the idle. with either your finger or a screw driver and push the plate down on the carbs that the cable connects too. if the idle drops this conforms your problem. order a new cable from dennis kirk they have the revised one that has metal adjustment screw and metal clip in. better jacket casing as well.

Angelo Stewart

• 224 Answers
• Posted on Dec 10, 2009

SOURCE: 2006 Suzuki Boulevard C50 engine dies

Even though you probably don't have that many miles on the bike, or if you do have a lot riding time on it, it sounds to me like you need a valve adjustment. That's a high reving bike for that engine that works pretty hard so you might have 1 - 3 loose valves.